It is the square: the variable multiplied by itself.
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it means to multiply by the same number. for example: 5 to the second power is 25 because 5 times 5 is 25.
That would be two. Two to the second power is 4.
The word power is another word for exponents
That means that powers are used in which the base is 10. It is also implied that the exponent is an integer.
when they say a number is "to a power" like "5 to the second power" its the same thing as 52 read "5 squared" to solve this all you have to do is 5x5=25. if you have "3 to the fourth power" you would do 34 which is the same as 3x3x3x3=81.